#include "workerManager.h"
#include <fstream>
#include "worker.h"
#include <string>
#include "employee.h"
#include "manager.h"
#include "boss.h"

WorkerManager::WorkerManager()
{

    //1、文件不存在

    ifstream ifs;
    ifs.open(FILENAME, ios::in); // 读文件

    if (!ifs.is_open())
    {
        //cout << "文件不存在" << endl;
        //初始化属性
        //初始化记录人数
        this->m_EmpNum = 0;
        //初始化数组指针
        this->m_EmpArray = NULL;
        //初始化文件是否为空
        this->m_FileIsEmpty = true;
        ifs.close();
        return;
    }

    //2、文件存在 数据为空
    char ch;
    ifs >> ch;
    if (ifs.eof())
    {
        //文件为空
        //cout << "文件为空！" << endl;
        //初始化记录人数
        this->m_EmpNum = 0;
        //初始化数组指针
        this->m_EmpArray = NULL;
        //初始化文件是否为空
        this->m_FileIsEmpty = true;
        ifs.close();
        return;
    }

    //3、文件存在，并且记录数据
    int num = this->get_EmpNum();
    //cout << "职工人数为： " << num << endl;
    this->m_EmpNum = num;

    //开辟空间
    this->m_EmpArray = new Worker*[this->m_EmpNum];
    //将文件中的数据 ，存到数组中
    this->init_Emp();

    //测试代码
    //for (int i = 0; i < this->m_EmpNum; i++)
    //{
    //	cout << "职工编号： " << this->m_EmpArray[i]->m_Id
    //		<< " 姓名： " << this->m_EmpArray[i]->m_Name
    //		<< " 部门编号： " << this->m_EmpArray[i]->m_DeptId << endl;
    //}
}

//展示菜单
void WorkerManager::Show_Menu()
{
    cout << "********************************************" << endl;
    cout << "*********  欢迎使用职工管理系统！ **********" << endl;
    cout << "*************  0.退出管理程序  *************" << endl;
    cout << "*************  1.增加职工信息  *************" << endl;
    cout << "*************  2.显示职工信息  *************" << endl;
    cout << "*************  3.删除离职职工  *************" << endl;
    cout << "*************  4.修改职工信息  *************" << endl;
    cout << "*************  5.查找职工信息  *************" << endl;
    cout << "*************  6.按照编号排序  *************" << endl;
    cout << "*************  7.清空所有文档  *************" << endl;
    cout << "********************************************" << endl;
    cout << endl;
}

//退出系统
void WorkerManager::ExitSystem()
{
    cout << "欢迎下次使用" << endl;
    system("pause");
    exit(0); // 退出程序
}

//添加职工
void WorkerManager::Add_Emp()
{
    cout << "请输入添加职工数量： " << endl;

    int addNum = 0; //保存用户的输入数量
    cin >> addNum;

    if (addNum > 0)
    {
        //添加
        //计算添加新空间大小
        int newSize = this->m_EmpNum + addNum; // 新空间人数 = 原来记录人数 + 新增人数

        //开辟新空间
        Worker ** newSpace = new Worker*[newSize];

        //将原来空间下数据，拷贝到新空间下
        if (this->m_EmpArray != NULL)
        {
            for (int i = 0; i < this->m_EmpNum; i++)
            {
                newSpace[i] = this->m_EmpArray[i];
            }
        }

        //批量添加新数据
        for (int i = 0; i < addNum; i++)
        {
            int id; //职工编号
            string name; //职工姓名
            int dSelect; // 部门选择

            cout << "请输入第 " << i + 1 << " 个新职工编号： " << endl;
            cin >> id;

            cout << "请输入第 " << i + 1 << " 个新职工姓名： " << endl;
            cin >> name;

            cout << "请选择该职工岗位： " << endl;
            cout << "1、普通职工" << endl;
            cout << "2、经理" << endl;
            cout << "3、老板" << endl;
            cin >> dSelect;

            Worker * worker = NULL;
            switch (dSelect)
            {
                case 1:
                    worker = new Employee(id, name, 1);
                    break;
                case 2:
                    worker = new Manager(id, name, 2);
                    break;
                case 3:
                    worker = new Boss(id, name, 3);
                    break;
                default:
                    break;
            }
            //将创建职工职责 ，保存到数组中
            newSpace[this->m_EmpNum + i] = worker;

        }

        //释放原有空间
        delete[] this->m_EmpArray;

        //更改新空间的指向
        this->m_EmpArray = newSpace;

        //更新新的职工人数
        this->m_EmpNum = newSize;

        //更新职工不为空标志
        this->m_FileIsEmpty = false;

        //提示添加成功
        cout << "成功添加" << addNum << "名新职工!" << endl;

        //保存数据到文件中
        this->save();

    }
    else
    {
        cout << "输入数据有误" << endl;
    }

    //按任意键后 清屏回到上级目录
    system("pause");
    system("cls");
}

//保存文件
void WorkerManager::save()
{
    ofstream ofs;
    ofs.open(FILENAME, ios::out); // 用输出的方式打开文件  -- 写文件

    //将每个人数据写入到文件中
    for (int i = 0; i < this->m_EmpNum; i++)
    {
        ofs << this->m_EmpArray[i]->m_Id << " "
            << this->m_EmpArray[i]->m_Name << " "
            << this->m_EmpArray[i]->m_DeptId << endl;
    }

    //关闭文件
    ofs.close();

}


//统计文件中人数
int WorkerManager::get_EmpNum()
{
    ifstream ifs;
    ifs.open(FILENAME, ios::in); //打开文件  读

    int id;
    string name;
    int dId;

    int num = 0;

    while (ifs >> id && ifs >> name && ifs >> dId)
    {
        //统计人数变量
        num++;
    }

    return num;

}

//初始化员工
void WorkerManager::init_Emp()
{
    ifstream ifs;
    ifs.open(FILENAME, ios::in);

    int id;
    string name;
    int dId;

    int index = 0;
    while (ifs >> id && ifs >> name && ifs >> dId)
    {
        Worker * worker = NULL;

        if (dId == 1) //普通职工
        {
            worker = new Employee(id, name, dId);
        }
        else if (dId == 2) //经理
        {
            worker = new Manager(id, name, dId);
        }
        else  //老板
        {
            worker = new Boss(id, name, dId);
        }
        this->m_EmpArray[index] = worker;
        index++;
    }

    //关闭文件
    ifs.close();
}

//显示职工
void WorkerManager::Show_Emp()
{
    //判断文件是否为空
    if (this->m_FileIsEmpty)
    {
        cout << "文件不存在或记录为空!" << endl;
    }
    else
    {
        for (int i = 0; i < m_EmpNum; i++)
        {
            //利用多态调用程序接口
            this->m_EmpArray[i]->showInfo();
        }
    }
    //按任意键后清屏
    system("pause");
    system("cls");
}

//删除职工
void WorkerManager::Del_Emp()
{
    if (this->m_FileIsEmpty)
    {
        cout << "文件不存在或记录为空！" << endl;
    }
    else
    {
        //按照职工编号删除
        cout << "请输入想要删除职工编号：" << endl;
        int id = 0;
        cin >> id;

        int index = this->IsExist(id);

        if (index != -1) //说明职工存在，并且要删除掉index位置上的职工
        {

            for (int i = index; i < this->m_EmpNum - 1; i++)
            {
                //数据前移
                this->m_EmpArray[i] = this->m_EmpArray[i + 1];
            }
            this->m_EmpNum--; //更新数组中记录人员个数
            //数据同步更新到文件中
            this->save();

            cout << "删除成功！" << endl;
        }
        else
        {
            cout << "删除失败，未找到该职工" << endl;
        }
    }

    //按任意键 清屏
    system("pause");
    system("cls");
}

//判断职工是否存在  如果存在返回职工所在数组中的位置，不存在返回-1
int WorkerManager::IsExist(int id)
{
    int index = -1;

    for (int i = 0; i < this->m_EmpNum; i++)
    {
        if (this->m_EmpArray[i]->m_Id == id)
        {
            //找到职工
            index = i;

            break;
        }
    }

    return index;
}

//修改职工
void WorkerManager::Mod_Emp()
{
    if (this->m_FileIsEmpty)
    {
        cout << "文件不存在或记录为空！" << endl;
    }
    else
    {
        cout << "请输入修改职工的编号：" << endl;
        int id;
        cin >> id;

        int ret = this->IsExist(id);
        if (ret != -1)
        {
            //查找到编号的职工

            delete this->m_EmpArray[ret];

            int newId = 0;
            string newName = "";
            int dSelect = 0;

            cout << "查到： " << id << "号职工，请输入新职工号： " << endl;
            cin >> newId;

            cout << "请输入新姓名： " << endl;
            cin >> newName;

            cout << "请输入岗位： " << endl;
            cout << "1、普通职工" << endl;
            cout << "2、经理" << endl;
            cout << "3、老板" << endl;
            cin >> dSelect;

            Worker * worker = NULL;
            switch (dSelect)
            {
                case1:
                    worker = new Employee(newId, newName, dSelect);
                    break;
                case2:
                    worker = new Manager(newId, newName, dSelect);
                    break;
                case 3:
                    worker = new Boss(newId, newName, dSelect);
                    break;
                default:
                    break;
            }

            //更改数据 到数组中
            this->m_EmpArray[ret]= worker;

            cout << "修改成功！" << this->m_EmpArray[ret]->m_DeptId << endl;

            //保存到文件中
            this->save();
        }
        else
        {
            cout << "修改失败，查无此人" << endl;
        }
    }

    //按任意键 清屏
    system("pause");
    system("cls");
}


//查找职工
void WorkerManager::Find_Emp()
{
    if (this->m_FileIsEmpty)
    {
        cout << "文件不存在或记录为空！" << endl;
    }
    else
    {
        cout << "请输入查找的方式：" << endl;
        cout << "1、按职工编号查找 " << endl;
        cout << "2、按职工姓名查找 " << endl;

        int select = 0;
        cin >> select;

        if (select == 1)
        {
            //按照编号查
            int id;
            cout << "请输入查找的职工编号： " << endl;
            cin >> id;

            int ret= IsExist(id);
            if (ret != -1)
            {
                //找到职工
                cout << "查找成功！该职工信息如下：" << endl;
                this->m_EmpArray[ret]->showInfo();
            }
            else
            {
                cout << "查找失败，查无此人" << endl;
            }
        }
        else if (select == 2)
        {
            //按照姓名查
            string name;
            cout << "请输入查找的姓名：" << endl;
            cin >> name;

            //加入判断是否查到的标志
            bool flag = false; //默认未找到职工

            for (int i = 0; i < m_EmpNum; i++)
            {
                if (this->m_EmpArray[i]->m_Name == name)
                {
                    cout << "查找成功，职工编号为： "
                         << this->m_EmpArray[i]->m_Id
                         << "号职工信息如下：" << endl;

                    flag = true;

                    //调用显示信息接口
                    this->m_EmpArray[i]->showInfo();
                }
            }
            if (flag == false)
            {
                cout << "查找失败，查无此人！" << endl;
            }
        }
        else
        {
            cout << "输入选项有误！" << endl;
        }
    }

    //按任意键清屏
    system("pause");
    system("cls");
}

//按照编号排序
void WorkerManager::Sort_Emp()
{
    if (this->m_FileIsEmpty)
    {
        cout << "文件不存在或记录为空！" << endl;
        system("pause");
        system("cls");
    }
    else
    {
        cout << "请选择排序方式：" << endl;
        cout << "1、按职工号进行升序" << endl;
        cout << "2、按职工号进行降序" << endl;

        int select = 0;
        cin >> select;
        for (int i = 0; i < m_EmpNum; i++)
        {
            int minOrMax = i; //声明最小值 或 最大值下标
            for (int j = i + 1; j < this->m_EmpNum; j++)
            {
                if (select == 1) //升序
                {
                    if (this->m_EmpArray[minOrMax]->m_Id > this->m_EmpArray[j]->m_Id)
                    {
                        minOrMax = j;
                    }
                }
                else  //降序
                {
                    if (this->m_EmpArray[minOrMax]->m_Id < this->m_EmpArray[j]->m_Id)
                    {
                        minOrMax = j;
                    }
                }
            }

            //判断一开始认定 最小值或最大值 是不是 计算的最小值或最大值，如果不是 交换数据
            if (i != minOrMax)
            {
                Worker * temp = this->m_EmpArray[i];
                this->m_EmpArray[i] = this->m_EmpArray[minOrMax];
                this->m_EmpArray[minOrMax] = temp;
            }

        }

        cout << "排序成功！排序后的结果为： " << endl;
        this->save(); //排序后结果保存到文件中
        this->Show_Emp();//展示所有职工
    }

}


//清空文件
void WorkerManager::Clean_File()
{
    cout << "确定清空？" << endl;
    cout << "1、确定" << endl;
    cout << "2、返回" << endl;

    int select = 0;
    cin >> select;

    if (select == 1)
    {
        //清空文件
        ofstream ofs(FILENAME, ios::trunc); // 删除文件后重新创建
        ofs.close();

        if (this->m_EmpArray != NULL)
        {
            //删除堆区的每个职工对象
            for (int i = 0; i < this->m_EmpNum; i++)
            {
                delete this->m_EmpArray[i];
                this->m_EmpArray[i] = NULL;
            }

            //删除堆区数组指针
            delete[] this->m_EmpArray;
            this->m_EmpArray = NULL;
            this->m_EmpNum = 0;
            this->m_FileIsEmpty = true;
        }

        cout << "清空成功！" << endl;
    }

    system("pause");
    system("cls");
}

WorkerManager::~WorkerManager()
{
    if (this->m_EmpArray != NULL)
    {
        for (int i = 0; i < this->m_EmpNum; i++)
        {
            if (this->m_EmpArray[i] != NULL)
            {
                delete this->m_EmpArray[i];
            }
        }

        delete[] this->m_EmpArray;
        this->m_EmpArray = NULL;
    }
}